楔紧螺纹锁紧螺母的防松原理是在螺母牙根处切成斜坡状，如图1所示，螺纹副间隙较大，螺母可以轻易旋到压住被联接零件，再用力扳动少许，螺母牙根与螺栓牙顶的楔紧作用就使螺纹副的纵横压紧，使螺纹副中存在着不随联接载荷而变的压力，因而始终有摩擦力矩防止相对转动，这种防 Wedge tight thread locking nut anti-loose principle is cut in the root of the nut cut into a ramp, as shown in Figure 1, the larger the gap between the thread, the nut can be easily screwed to suppress the parts being coupled, and then force a little pull, the nut Tooth root and the top of the bolt wedge tightness on the vertical and horizontal compression of the screw thread deputy, so there is no thread pressure in the coupling load and the resulting change, and therefore always have a friction torque to prevent relative rotation, this defense